@DBZ_universe: Teleporting inside organs won't be happening. Buu has never shown such sophistication with teleportation. If teleporting in and out of others was as simple as most are claiming, wouldn't simply IT'ing out of Buu been a walk in the park for Goku? Yet he did not. Also, let's consider that Buu can actually teleport inside people as you say, it would still do him no good. Buu is far too unintelligent to actually try to teleport inside an opponent's organs even if he could. A character can possess an ability but if he's too retarded to use it effectively then it doesn't matter. Take Marvel's Electro as an example. He could potentially rival Magneto in power if he was smarter but he's too dumb and cannot use his true potential. The same applies for Buu. Let's say he could teleport in and out of others and even their organs, Kid Buu who can't even speak is smart enough to know what organs are? Let alone teleport into them? Yeah right.
You don't require physical hits when your opponent is capable generating energy blasts that can even harm Anti-Monitor. Kid Buu can be vaporized which would leave nothing to regenerate from. And you said that Hal usually resorts to physical hits in battles, well he is bloodlusted here and there are no morals, nothing is stopping him from projecting massive energy that will erase Kid Buu. Kid Buu's clones won't really distract a superhero who's seen nearly everything people think is impossible. Plus, the clones are no trouble if even Vegeta managed to easily destroy them. Hal would not have a problem dispatching the clones. Buu is also dealing with an opponent who is better versed in matter reconstruction with better feats in the field (I can post scans if requested). Kid Buu's durability is not impressive at all so he relies entirely on his regeneration so this is not a good thing against opponents who can harm Anti-Monitor and Superman with energy blasts. While Hal on the other hand managed to protect himself from a blank point range supernova with one of his barriers. Kid Buu won't be penetrating that.